celery/examples/eventlet/tasks.py

from celery import task
from eventlet.green import urllib2


@task()
def urlopen(url):
    print('Opening: %r' % (url, ))
    try:
        body = urllib2.urlopen(url).read()
    except Exception, exc:
        print('URL %r gave error: %r' % (url, exc))
    return len(body)